CVE-2017-7995

Xen PV guest before Xen 4.3 checked access permissions to MMIO ranges only after accessing them, allowing host PCI device space memory reads, leading to information disclosure. This is an error in the get_user function. NOTE: the upstream Xen Project considers versions before 4.5.x to be EOL.

Published: 2017-05-03 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-7995 is rated Low Risk (25.4/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.37%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2017-7995

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.06% 0.37% +0.30%
2 2023-03-07 0.89% 0.06% -0.83%
3 2022-02-04 — 0.89% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-7995

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.8 3.0 LOW
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.0 1.4 [email protected]
1.7 2.0 LOW
AV:L/AC:L/Au:S/C:P/I:N/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 3.1 2.9 [email protected]

Weakness enumeration for CVE-2017-7995

OS Trackers for CVE-2017-7995

vendor priority summary link
debian not yet assigned CVE-2017-7995 not yet assigned priority: Debian including 1 source packages (xen), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2017-7995
redhat low — https://access.redhat.com/security/cve/CVE-2017-7995
suse low CVE-2017-7995 severity low: SUSE including 33 source package names (xen, xen-4.0.3_21548_18-52.1, …), 90 product×package rows across 15 product lines (SUSE Linux Enterprise Desktop 12 SP1, SUSE Linux Enterprise Point of Sale 11 SP3, … (15 product lines)): Fixed 52, Known Not Affected 38. https://www.suse.com/security/cve/CVE-2017-7995/
ubuntu medium CVE-2017-7995 medium priority: Ubuntu including 1 source packages (xen), 6 status rows across 6 suites (precise, trusty, upstream, xenial, yakkety, zesty): not-affected 3, DNE 1, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2017-7995

Affected software / configurations for CVE-2017-7995

Vendor Product Version Raw CPE
xen xen <= 4.2.5 cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
suse manager 2.1 cpe:2.3:a:suse:manager:2.1:*:*:*:*:*:*:*
suse manager_proxy 2.1 cpe:2.3:a:suse:manager_proxy:2.1:*:*:*:*:*:*:*
suse openstack_cloud 5 cpe:2.3:a:suse:openstack_cloud:5:*:*:*:*:*:*:*
novell suse_linux_enterprise_point_of_sale 11.0 cpe:2.3:o:novell:suse_linux_enterprise_point_of_sale:11.0:sp3:*:*:*:*:*:*
novell suse_linux_enterprise_server 11.0 cpe:2.3:o:novell:suse_linux_enterprise_server:11.0:sp3:*:*:ltss:*:*:*

References for CVE-2017-7995

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2017-05/msg00005.html Third Party Advisory
http://www.securityfocus.com/bid/98314 Third Party Advisory VDB Entry
https://bugzilla.suse.com/show_bug.cgi?id=1033948 Issue Tracking Third Party Advisory VDB Entry
cvelogic Threat Intelligence